During his six-month "Blue Dot" mission on the International Space Station, German astronaut Alexander Gerst would often leave his camera running while he worked and did experiments. He shared many of the resulting images during his journey, which turned him into something of a social media celebrity -- Twitter's introduction to the awe-inspiring views of space travel.

South Korea is investigating the online leak of partial blueprints and operating manuals for some of its nuclear reactors, as the perpetrator threatens to continue publishing data unless three facilities are shut by Christmas.

TLC is highlighting yet another subculture with its upcoming special, My Husband's Not Gay.The one-hour program, which airs Sunday, Jan 11 at 10/9c, follows a group of Mormon men who are happily married to women — but are...